Concept
The goal for this game is to have an enjoyable and lewd (dare we say enjoyably lewd?) PF campaign with a strong focus on monster breeding and pregnancy. My main profile on F-list (Lydarcrax) has a pretty accurate list of my kinks, and what I’m into as a GM, but given the context of the game, one could expect a variety of pregnancy-related kinks to be involved. In a greater sense, given the dynamic of monstrous males and fertile, attractive humanoid females, corruption should have a place – whether with pseudo-rape kinds of encounters, mind control, or the general lure of debauchery.
The structure of the game itself would be 4-6 hour chat sessions every other Sunday (we will figure out start date and time; I am on PST) where we’d handle the regular game stuff – then in between the sessions, we can do lewd scenes, and hopefully post the logs to the group.
My no list, for the most part, applies to this campaign as well – though I’m ok with gore as long as it isn’t in a sexual context, the regular ol’ fantasy hack and slash is fine. M/m sex and effeminate males aren’t really on my agenda for this campaign.

Rules/Characters
For this campaign I am assuming that players will want to play humanoid females or monstrous characters. For monstrous characters, there are special rules considerations – many of them have racial hit dice, and various powers that will require special rules attention to implement. No monster with 10 or more racial hit dice will be allowed, and optimally they would be kept to 5 or less. Player characters will be made with a minimum of 5 character levels/hit dice. Ability score modifiers for monsters may use the Pathfinder entry or the 3.5 one, as decided by me. Talk to me if you have any questions! I’m here to make sure things run smoothly.

Setting
Eoveria, though called many things in different tongues, is a wild, savage land, full of monstrous beasts and strange tribes. While well-defended dwarves and reclusive elves have called areas of this land their home since time immemorial, humans and their gnome and Halfling allies have only journeyed across the sea to this lush place recently, in the last 50 years taking many of the most fertile river valleys for their own agriculture and industry, organized garrisons of soldiers keeping the original denizens at bay. And it seemed inevitable that the orcs, goblinoids, minotaurs, and so on would be pushed to the mountaintops and swamps of the land.
Recently, though, there has been a murmuring among the tribes – that Lamashtu, the mother of monsters, the goddess that many of the savage races share, has granted her favor to those who would drive human civilization from her lands, and make of the wombs of the humanoid women a breeding ground for more monsters. An unprecedented gathering has been called, to find those champions of the monstrous races who may be capable of doing so.
Monster Society

The plight of the monstrous races in Eoveria in the face of unchecked Imperial expansion is even more dire than that of the local natives.  Extermination, pure and simple, is what awaits every orc, goblin, minotaur, or fiend-blooded humanoid who encounters their legionnaires.  Pushed to the periphery of the valley, to swamps or hills, many struggle to survive in the harshest parts of the region.  Individual monstrous might seems to fail against the phalanxes of armored humans, and their ballistas and scorpions, supported by powerful spellcasters from the Imperial Colleges.  So it has remained for more than 20 years – monsters pushed to the periphery, humans in the fertile river valley and rich hunting grounds.

What keeps the monstrous races as relatively united in the face of Imperial aggression is certain unifying aspects of their culture.  Since monsters can use females of almost any race as breeding stock, and still breed relatively true, it is common to raid the settlements of the settled folk to take their wives and daughters as 'slave-wives,' a concept recognized by the monsters of the region.  It is considered theft to take the slave-wives of another Son of Lamashtu, and many monsters take the practice of branding or tattooing their slave-wives to show ownership.  Obviously with the greater security provided to the settled folk, this has become more difficult in recent years, and the trading of slave-wives and their human daughters has become more of a serious activity.  Raids for slave-wives have become something fraught with danger, but very lucrative in the case of success.

The Mother of Monsters

A little over a year ago, a stone circle up in the hills, long thought abandoned, became inhabited by a powerful divine force.  Granting visions to various monsters and certain slave-wives who had embraced their position this force instructed them to start meeting at this circle of menhirs and organize the Cult of Lamashtu.  All monsters nominally worship the Mother of Monsters, and many species trace their lineage back to her in their myths and legends.  The solidarity between monster races comes from this shared kinship, and while individual monsters may feud with each other, outright warfare is uncommon.  Certain female monsters felt the call more strongly, and formed a sisterhood of priestesses who take it in turns to be custodians of the Circle.  Certain humanoid slave-wives have embraced their position enough to join the clergy as slave-priestesses as well, though this does not emancipate them from their masters.  The priestesses have been inciting for a stronger resistance to the Imperial presence, though some of the more cautious races such as the Lizardfolk have advised that discretion is more appropriate here.  Currently, daring monsters hoping to win the favor of Lamashtu have stepped up their raids, but there has been no concerted action against the Imperials.
	The church of Lamashtu teaches that, as children sprung forth from Lamashtu's fertile womb, monsters have the right by strength to dominate the world.  Fertile females are to be seized and taken as slave-wives from the settled folk, their wombs used to breed more monsters.  Monsters are to breed, scatter their seed far and wide, and overtake the world in their hordes.  The proper place for humanoid women is to surrender their wombs to monstrous seed, since the pleasure granted by such surrender far outstrips the weak ministrations of civilized men.  Only by doing so will they know the ecstasy of surrender to virile monstrous males and the pleasure of birthing truly strong children.  Women who do not understand should be made to understand with the gifts that Lamashtu has blessed each of her children with.